Molding apparatus.



J. H. DANVBR. & W. E. LOSE.

MOLDING APPARATUS. y

APPLIOATION FILED DBO. 9, 1908.

Patented June 8, 1909.

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WITNESSES tHE HoRRls PzrERs ca., wnsumcfomo. c.

srs-iras JAMES H. DANVER, OF BEAVER, AND WILLIAM H. LOSE, OF ZELIENOPLE, PENNSYLVANIA.

nonnina APPARATUS.

Specification of Letters Patent.

Patented June 8, 1909.

Application filed December 9, 1908. Serial No. 466,642.

To all whom it may concern.'

Be it known that we, JAMES H. DANvnR and. VILLIAM H. Losn, residents of Beaver and Zelienople, respectively, in the counties of Beaver and Butler, respectively, and State of Pennsylvania, have invented a new and useful Improvement in Molding Apparatus; and We do hereby declare the following to be a full, clear, and exact description thereof.

Our invention relates to a molding apparatus, and has special reference to a mechanism for moving the molding member of the apparatus from the mold after such mold has been formed.

The object of our invention is to provide a cheap, simple and efficient mechanism which can be applied to the part of the molding apparatus that is desired to be moved for clearance, after the mold has been formed, in order that the mold forming flask or pattern can be afterward drawn from the same, as

well as such a mechanism which can easily and quickly be operated and will insure a direct line of movement at all times.

Our invention consists, generally stated, in the novel arrangement, construction and combination of parts, as hereinafter' more specifically set forth and described and particularly pointed out in the claim.

To enable others skilled in the art to which the invention appertains to construct and use our improved molding apparatus, we will describe the same more fully, referring to the accompanying drawings, in which* Figure 1 is a plan view of a molding apparatus employing our invention. Fig. 2 is a side view of the same partly in section showing the parts in their mold-forming position. Fig. 3 is a similar view showing the pattern raised from the mold for clearance. Fig. 4 is a longitudinal section of another form of molding apparatus, with some of the parts in full lines, and showing the invention applied to a pattern or cope machine for lowering the same for clearance of the mold. y

Like symbols of reference herein indicate like parts in each of the figures of the drawings.

As illustrated in the drawings our invencasting of bath-tubs, such as is shown in our application for a molding app aratus filed in which is employed an outer pattern 1 having a hollow member 2 therein for forming the drag mold 3, an inner pattern 4, a hollow .member 5 placed around the pattern 4 for forming the cope mold 6, and the stripping plate 7 resting upon the drag flask 8.

In Figs. 1, 2 and 3, the mechanism for moving the apparatus is applied as a lifting device A for the outer pattern 1 and is mounted exteriorly of the same in the follow ing manner. Extending up from the stripping plate 7 on the flask 8 and at each end of the same are the lugs 9, within which are mounted the two cross-shafts 10, so that each of said shafts extend along each end of said plates and pattern 1, and each have a lever 10 at one of their ends.

Mounted on the shafts 10 are the arms 11 which are keyed to said shafts at one end and their opposite ends are pivoted to the ends of the short curved arms 12 on the l shaped links 12. rFliese links 12 are pivotally hung at the ends of their long arms 12 to the lugs 13, which project out from the ends of the casing 1 forming part of the pattern 1, and arod 14 extends along each side of said casing and is pivotally connected at its ends to the long arms of said links.

Extending up from each side of the strip ping plate 7 are the two bosses 15 which are provided with a seat 16 therein for the rcception of the vcontracted ends 17 on the dowel pins 17, and these pins are adapted to pass through lugs 18 on the casing 1 of the pattern 1 and guide said pattern to place when said pattern is lowered to place on the flask 8 to form the drag mold 3. On the outer side of each of the pins 17 and adjacent to the lugs 9 is a post 19 which extends up from and is secured to the stripping plate 7. These posts pass through lugs 20 formed on the ends of the pattern casing 1 and are pro vided with springs 21 held on the saine and bearing against the under faces of said lugs for cushioning the pattern 1 wh en it is lowered on the flask 8.

The operation of our improved molding apparatus is as follows-When the outer pattern 1 is being lowered down onto the dragllask 8 to form the drag-mold 3, the lifting device A is in the position shown in Fig. 3, and the said pattern will be guided to place V by the pins 17 on the plate 7 passing through tion is applied to a molding apparatus for the the lugs 18 on the casing 1 of said pattern and the posts 19 on said plate passing through the lugs 20 on said casing, so that when said pattern has been lowered to place on said liask, such as is shown in Fig. 2, it can be securely held in such position by the operators throwing the levers 10 from their positions shown in said Fig, 3 to the positions shown in Fig. 2. By this movement of the levers i 10 the shafts 10 will be turned and with l them the arms 11 on said shafts, which will i be thrown from their positions above said shafts, as shown in Fig. 3 to their vertical pol sitions below said shafts, as shown in Fig. 2, and thereby draw down the links 12 connected to said arms and connected together' l by the rods 14, so that the pivoted ends of short curved arms 12 on said links will come under and pass the center' of said shafts, which will enable said arms to iit around said shafts and .engage therewith to firmly set and lock the pattern 1 in position in the plate 7 and on the iiask 8 for the making of the mold 3.

After the mold 3 has been made and it is desired to remove the pattern 1 therefrom, the operators throw the levers 10 of the lifting device A to the positions shown in Fig. 3, which will act to turn the shafts 1() in a reverse direction from that Iiust described, so that the arms 11 will be thrown to a vertical position above said shafts and with them the pivoted ends of the curved arms 12 on the links 12, thereby raising` said links and with them said pattern 1. By this operation of the lifting device A, the pattern 1 will clear the mold 3, as shown in Fig. 3, and thereby permit said device, pattern and plate 7 to be elevated from around said mold by the usual crane or other devices and carried to any suitable point for another operation..

When the pattern 1 is being` lowered into position upon the flask S for forming the mold 3, the springs 21 on the posts 19 will act to cushion said. pattern to position by engaging with the lugs 2O on said pattern, and during the raising of said pattern from said mold after such mold is formed said spring will assist the easy starting of said pattern in such raising operation through the lifting device A.

In Fig. 4 the lifting device A is shown as applied to the inner pattern 4 for forming the cope mold 6 around the same by the holl low member 5, in which such device has its links 12 connected together by the rods 14 and to lugs 13 within said pattern, while the short arms 12 on said links are pivoted to the arms 11 mounted on the shafts 10 which are supported below said pattern and in a supporting flask or member 22 for the cope mold, iiask 6 and carrying the dowel pins l 17 for the guiding of the said flask 6. In this case, the arms 12 on the links 12 when raised by the raising of the arms 11 to their upper vertical position through the shafts .10, will raise the pattern al and member 5 through said links, to l'orm the mold (l, and after said moldl is formed a reverse movement of said shafts will draw down the arms l l to their lower vertical position and lower the arms 12 on said links, so that said links will draw down the said pattern and member to clear said mold` and permit said mold to be elevated from around said pattern and member in the usual manner and carried to th point desired. lf desired, the arms l2 on the links 12 can be provided with lugs 22S for engaging the shafts 1t) to ass' `t in holding the arins 11 in their raised positions for the setting and lockingv of the pattern l and member 5 during the forming of the mold t.

vVarious other modifications and changes in the design, construction and operation oll our improved molding apparatus may be resorted to without departing from the spirl t of the invention or saeri'lieing any of its advantages.

lt will thus be seen that in the use oll our improved molding apparatus the pat tern will clear the mold in a direct line at all times, and during the formation of they mold by the pattern such pattern will be held 'lirmly in position for such operatiom as well as being securely locked when in such position. 'l`he device for moving the pattern for clearance of the mold can he easily and conveniently operated by hand, will not get out ol' order and can be applied to any llask or pattern wherein it is desired to move the same l'or cleaning the mold or for sneh other purpose as would be desired,

that we claim our invention, and desire to secure by Letters ,l )atent is .ln a molding apparatus, the combination with a molding pattern, of shafts earried by said pattern and having arms thereon. L- shaped links connected to the pattern and to said arms for moving said pattern to relieve the same from the mold, said links being adapted. to engage with said shafts to loelty said pattern in its witlnlrawn position, and lugs on said links for engatging with said shafts to hold said links in workingV position.

in testimony whereof, we, the said dAnns l-l. DANynu and Willman ll. flmsn, hare hereunto set our hands.

lililrllCH l l. DAN Vlll. Wllililiial ll. LOSE.

Witnesses:

J. L. l`nnrmgmm, Jr., J. i\'. Cooke.

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